The Dark Side is clouding everything, including everything's judgement. It is growing more and more powerful as events continue to spiral out of control and Palpatine continues manipulating events in his own favour. So to some degree it is the Force's fault as the light side is being overwhelmed by the dark. The Jedi are compromised somewhat to see this. We've known this since Episode I. These are not natural events that are unfolding...and the Jedi, especially Yoda knows that, but they can't really do anything about it.